问题 单项选择题

把一个周期性交变的电流i和一个直流电流I分别通过阻值相同的电阻R,在相同的时间内,若它们在电阻上产生的热效应相同,则该直流电的大小对应交变电流i的()。

A.最大值

B.有效值

C.瞬时值

D.平均值

答案

参考答案:B

阅读理解

◆A swimming coach from Moldova is looking for a job in Beijing. Qualifications as: Coach/Judge at National Standard; Olympian(Randed 12th in the world in 1995), World Cup Silver Medallist. Experienced children’s coach at all levels; Qualified driver(B,C,D,E categories); Bodybuilding instructor; Proficient in Russian, English, Romanian, Ukrainian.

Contact Max Cazmirciuc at: 13126711168 or email:mcazmirciuc@yahoo.com

◆     A retired president and CEO of two Canadian companies, interested in teaching English or

French in China.

Cellphone: 13520559132, email: Jeanguyfurois@aol.com

◆Web design graduates are available. For details visit: www.inhb.com, or call Liu or Tang at: 0311-3160000. Email: luogq@beinfo.net

◆Female Beijinger, 39, has a decade’s experience in import-export business, human resources management, interpretation and secretarial work. I have a good command of computer skills and am good at English, both writing and speaking.

Mobile: 13611163663

◆Laid-off workers are providing PC maintenance services such as system upgrade, virus detection and removal, data copying and recovering, system utilization and security.

Call:6732 7317

56. The purpose of the advertisement is_________.

A. to teach at a school              B. to start a business

C. to seek employment                D. to work as web designers

57. We can learn from the advertisements that ________.

A. some foreigners are interested in working in China.

B. it’s not easy for web design graduates to get a job.

C. female Beijingers would like to advertise in a newspaper.

D. all the laid-off workers have applied for a job in a newspaper.

58. Which of the following statements is NOT TRUE?

A. A retired CEO would like to teach in China.

B. A bodybuilding instructor has to speak 4 foreign languages.

C. A Beijinger has rich experience in human resource management.

D. If a company wants a web designer it can call at 0311-3160000.

单项选择题